I have two objects with nested collections in my working memory.&nbsp; I need to determine if elements from one collection exist in the other collection.&nbsp; Here&#39;s an idea of what my objects look like:<br><br>Class Foo:<br>List&lt;Token&gt; tokens<br>
<br>Class Bar:<br>List&lt;Token&gt; tokens<br><br>I&#39;m putting instances of Foo and Bar into the working memory.<br><br>A few days ago I got this generic suggestion but I&#39;m not sure what it&#39;s actually doing: <br>
<br>A( $colA : collection )<br>B( $colB : collection )<br>exists( Object( this memberOf $collectionB ) from $colA )<br><br>Can someone expand on that and explain what&#39;s happening?&nbsp; Any help is appreciated.<br><br>Regards,<br>
Nick<br>